ANSERINJE.] 



16 



GENUS V. ANSEH. 



Ext. Char. Pedes digitis posterioribus non lobatis, unguibus magnis arcuatis. 7am 

 robusti et magni. Tibia parte tertia denudatse. Rostrum magnum, validum, ungue magna 

 instructum, lateribus plerumque hiantibus. Nares ovales in medio rostri posits. Lingua 

 obtusa non ad apicem appendiculata, sed subtus cornea, in latera una ordine setarum brevium, et 

 supra has setas multis rigidis spinis instructis ad apicem tendentibus. 



An at. Char. Trachea tubula complanata, sed versus larynginem inferiorum contractam. 

 Larynx 'inferior ossea, sed non tuberculosa. 



Ext. Char. Feet with the posterior toes not lobated, armed with large claws. Tarsi 

 robust and large. Tibia for a third part denuded. Bill large, strong, furnished with a large nail, 

 the sides gaping. Nostrils oval, placed in the middle of the bill. Tongue obtuse, without an 

 appendage, but below corneous, the sides armed with one rank of bristles, above and on the sides 

 is a row of many stiff bristles extending to the tip. 



Anat. Char. Trachea with the tube of equal size, but contracted towards the inferior 

 larynx. The inferior Larynx long and not tuberculous. 



Anser. Auct. 



Anas. Linn. 



Type. Anser ferus. 



The proportions of the skeleton are as follows: — Depth of the keel to the length of the 

 sternum, as 1 to 4. Breadth of the pelvis to its length, as 1 to 11. Length of sternum to that 

 of tibiae, as 1 to 1|. Height of cranium to its length, as 1 to 3. 



